David Hildenbrand
2848a28b0a
drivers/base/node: consolidate node device subsystem initialization in node_dev_init()
...
... and call node_dev_init() after memory_dev_init() from driver_init(),
so before any of the existing arch/subsys calls. All online nodes should
be known at that point: early during boot, arch code determines node and
zone ranges and sets the relevant nodes online; usually this happens in
setup_arch().
This is in line with memory_dev_init(), which initializes the memory
device subsystem and creates all memory block devices.
Similar to memory_dev_init(), panic() if anything goes wrong, we don't
want to continue with such basic initialization errors.
The important part is that node_dev_init() gets called after
memory_dev_init() and after cpu_dev_init(), but before any of the relevant
archs call register_cpu() to register the new cpu device under the node
device. The latter should be the case for the current users of
topology_init().
Link: https://lkml.kernel.org/r/20220203105212.30385-1-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com >
Reviewed-by: Oscar Salvador <osalvador@suse.de >
Tested-by: Anatoly Pugachev <matorola@gmail.com > (sparc64)
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
Cc: Michal Hocko <mhocko@suse.com >
Cc: Oscar Salvador <osalvador@suse.de >
Cc: Mike Rapoport <rppt@kernel.org >
Cc: Catalin Marinas <catalin.marinas@arm.com >
Cc: Will Deacon <will@kernel.org >
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de >
Cc: Michael Ellerman <mpe@ellerman.id.au >
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Paul Walmsley <paul.walmsley@sifive.com >
Cc: Palmer Dabbelt <palmer@dabbelt.com >
Cc: Albert Ou <aou@eecs.berkeley.edu >
Cc: Heiko Carstens <hca@linux.ibm.com >
Cc: Vasily Gorbik <gor@linux.ibm.com >
Cc: Yoshinori Sato <ysato@users.sourceforge.jp >
Cc: Rich Felker <dalias@libc.org >
Cc: "David S. Miller" <davem@davemloft.net >
Cc: Thomas Gleixner <tglx@linutronix.de >
Cc: Ingo Molnar <mingo@redhat.com >
Cc: Borislav Petkov <bp@alien8.de >
Cc: Dave Hansen <dave.hansen@linux.intel.com >
Cc: "Rafael J. Wysocki" <rafael@kernel.org >
Signed-off-by: Andrew Morton <akpm@linux-foundation.org >
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org >
2022-03-22 15:57:10 -07:00
